This mean-looking contrivance is the McLaren 600LT in Stealth Grey by MSO (McLaren Special Operations) and it's due to be unveiled at this year's Pebble Beach Concours d'Elegance outside Monterey, in California. Based on the 600LT, which was introduced at July's Goodwood Festival of Speed, the Stealth Grey MSO Bespoke paint clothes the bodywork of a Macca that features a wide selection of upgrades from both the MSO Defined catalogue of options and MSO Bespoke customer choices. Featuring the top-exit LT exhaust, the Pebble Beach star has 600hp, meaning it is capable of 0-60mph in just 2.8 seconds, before hitting 204mph flat out. Ansar Ali, MD of MSO, said: "MSO Bespoke was established to help customers realise their dreams and allows an almost limitless level of customisation where imagination is the only restrictive factor. With MSO Defined we offer a range of personalisation beyond the standard factory options. For this special 600LT, we have combined a sprinkling of both to create a car that showcases the lightness and track-focused performance of this latest Longtail variant."